Reinforced concrete construction.



G. A. MASTERS.

BEINFORCED CONCRETE CONSTRUCTION.

APPLICATION FILED SBPT.23, 1907.

91 6,748. Patented Mar. 30, .1909

2 SHEETS-SHEET 1.

WITNESSES: NI/ENTOR ATORNEY G. A. MASTERS. REINFORCED CONCRETEl GQNSTRUGTION.

APPLICATION FILED SBPT.23,1907.

Patented Mar. 30, 1909.

A FIGMAP.

,zO/40m ATTORNEY GEORGE A. MASTERS, OF CHICAGO, ILLINOIS.

REINFORCED CONCRETE CONSTRUCTION.

Speecaton of Letters Patent.

Patented March 30, 1909.

Application filed September 23, 1907. Serial No. 394,049.

f a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Reinforced Concrete Construction, of which the following is a specification.

One of the objects of this invention is the production of a concrete wall or other structure in which materials of different qualities may be used in different parts of the structure, permitting the employment of high. grade material where needed and lowergrade material in the remaining parts of the structur.

Another object of the invention is thel production of 'a concrete wall or other structure requiring no boxing or forms 1n its constructlon.

A further object is to provide an improved process for producing concrete structures.

-The invention also relates to the other im provements in reinforced-concrete construction hereinafter set forth.

In the accompanying drawings, Figures l, 2 and 3 are-fragmental horizontal sections through ,a wall embodying the feat'ures of my inverition, illustrating the same in differ` ent stages of construction. Fig. 4 is a fragmental vertical transverse section, and Fig. 5, a fragmental side elevation of said wall. Figs. 6, 7 and 8 are sectional detail views.

In carrying out mv invention, I construct and set upon a suitable foundation a, a metallic framework comprising, in this instance, upright T-bars l. In the case of a wal1, the T-barsl are afi-ranged in two rows with the stems of the Ts extending inwardly, opposite T-bars of the two rows being secured together in pairs by means of cross-bars 2 bolted or otherwise secured to the stems of said T-hars. The Trbars of each row are secured together by means of horizontal wires 3 drawn through `openings 4' formed in the flanges, `5 of said bars. This method of securing the T-bars together ermits of adjusting the position of said T- ars A as desired by sliping them along said wires. The cross-bars 2 and horizontal wires 3 are placed at such distances apart as may be necessary 'to make a com aratively rigid framework for the propose structure. The inner and outer sides of this framework are then covered with a suitable form of lathin for supporting the outer layers of materia?,

said lathing being putin place in the manner to be now described.

Upon both sides of the framework, at the bottom thereof, is placed a strip 6 of wire netting, expanded metal or the like, said strip extending for any suitable distance along thewall, preferably the entire length thereof, and being tied to the upright T- bars l'by means of wires 7, Figs. 2 Vand 5. These strips of lathing materlal may be made of any suitable height, say, five feet. Along the top edge of the lathing material is placed a division member which may consist of a series of abutting horizontally-extending T-bars or angle-irons S tied to the uprights l by means of wires 9, the horizontally-extending liange of said division membe;ta preferably being equal in width to t-he di wall and the T-bars 1. the strips 6 are then plastered with the desired 'facing material, such. as water-proof cement mortar, said facing material bei rubbed well into place, so that some of 1t shall pass through the lathing material, and

securely anchor the facing materiall thereto.`

As soon as the facing material Abegins to set, its outer surface is tru'ed up and given the desired finish. When the two thin Walls thus formed have set, they constitute a mold into which the tllingmaterial for the wall, such las common concrete, is dumped. A section of thewall having thus `been completed, another strip 6 of lathing material is secured to each side of the framework just above vthe division member 8, and asimilar division membersecured in place at the upper edge of said strip of lathing material. Said strips are then plastered andthe interior filled with concrete or other filling material, as before described.. This process is continued until the structure reaches the, desired height.

A wall formed of the materials mentioned, and in the manner described, may be completed without the use of boxing or molds, the outer layers of the Wall being made to serve the purpose of such molds. As will be seen, the portions of the 'wall exposed' to weathering and other forms of wear may be made of high-quality materials, and the in`-` terior of t e wall of4 cheaper, long-grade material. The division members 8 form g'ages for the thickness of the outside laster coat, and guides for the straight-e ge or other device used in truing up and smooth` ing ,the "face f said coat. Said division members also jserie' to divide the surfaces of the Wall into panels, and thus enhance its appearance. They also form a division line between the courses of the outside plaster shells, the edges of which courses could not,

be made to oin satisfactorily, if said division 4 members Were omitted. Furthermore said members provide expansion joints for the Wall, thereby breaking up the surfaces of the Wall into relatively small sections, it being Well known that large cement surfaces are liable to cracking.

It is evident that Various changes may be made in the embodiment-herein shown Without departing from the spirit and scope of my invention, therefore no undue limitation should be understood from the foregoing detailed description.

I claim as my invention:

` A frame work for reinforced concrete Walls, comprising parallel rows of T-bars 1ocated opposite to each other in pairs; cross bars connecting opposite T-barsV` and horizontal members connected to said T-bars and passing through the anges of said T-bars on the opposite sides of their webs.

GEORGE A. MASTERS Witnesses C. PAUL PARKER, GEORGE L. CHINDAHL. 

